1) To really whoop someone physically or verbally; to hand it to them.

When adjectivized ({wrecked}) it becomes a word to describe how messed up someone was becuase of a physical or verbal beating, or sometimes because of substance abuse.

1) When the volleyball team ran the guantlet to initiate their freshmen, Bean picked up a sandal and totally wrecked someone.
2) I totally wrecked my histroy teacher when we debated Fascism vs. totalitarianism.
3) Last night I met up with Mike and smoked a bowl, I was so wrecked that I couldn't find my way back home.